compact, reliable midrange performers

Midrange Four Strokes

Mechanical or Tiller: 40 hp, 30 hp

The Yamaha 40 hp and 30 hp Midrange four strokes are known for their small size and solid performance. Light and powerful, these nimble, three-cylinder wonders are perfect for light duty on skiffs, jons and inflatables and small pontoons or aluminum fishing boats. With single-overhead camshafts and electronic fuel injection, they deliver quick starts, responsive power, quiet operation and valuable efficiency. Not only that, but they’re also both compatible with our award-winning Multi-Function Tiller Handle, which allows for variable trolling and fishing flexibility. The Yamaha Midrange 40- and 30-hp four strokes. Reliable power for any small-scale, boating application.

Owners Manuals

View the 40 hp

View the 30 hp

Power & Performance

Fuel Economy

Precision Multi-Point Electronic Fuel Injection delivers the exact amount of fuel needed for optimum performance and efficiency. Yamaha’s EFI optimizes fuel atomization further enhancing fuel economy.

Single Overhead Camshaft

A Single Overhead Camshaft (SOHC), three-cylinder design on the F40 and F30 provides a compact, lightweight, space-saving design.

Precise Throttle Control

All air entering the engine block of is routed through a single throttle valve, to ensure the precise amount of air necessary for optimum power and fuel efficiency. It then enters each cylinder through individual long intake tracks, which are 'pulse tuned' to provide air at the precise volume and timing for maximum density and power.

Dependable Starting

The F40 and F30 feature a vapor-reducing fuel return system. Used in conjuction with multi-point electronic fuel injection, they offer dependable turn-key starting in hot or cold conditions.

Reliability & Durability

Corrosion Protection

Combined with our proprietary alloy (YDC-30), our exclusive Phaze Five™ anti-corrosive paint system provides a tough, five-layer barrier against corrosion. This protection is standard on all Yamaha Midrange four-stroke engines.

PRECISION TROLLING

The nimble, responsive F40 and F30 offer more than incredible performance. They also offer the option of variable trolling capability. Our exclusive, Variable Trolling RPM Switch (VTS^®) allows for the precision adjustment of trolling speeds between 650 and 900 RPM in 50-RPM increments.

Convenience & Control

Control and Comfort

Our optional, award-winning Multi-Function Tiller handle features a Variable Trolling RPM Switch (VTS®). It allows for precision trolling speed adjustments in 50-RPM increments. Compatible with all Midrange models.

Easy Engine Flushing

A Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life.

Power Trim and Tilt

Power trim and tilt models provide a trim range of -3 up to +20 degrees. This brings the bow of the boat up, for better hole shot and top speed and a smoother ride.

Product Videos:

Yamaha Midrange

Midrange 40 hp

Our 747-cc 40-hp midrange provides powerful performance in a compact package that’s available in both propeller- and jet-pump-driven models. With its single throttle valve, long-track intake manifold and electronic control module, it delivers easy starts, fast acceleration and excellent top-end speed.

Available for mechanical or tiller-handle control
Only 214 pounds
Available in a 20” shaft
Powerful 17-amp alternator
Optional Variable Trolling RPM Switch (VTS^®) via our Multi-Function Tiller Handle, Command Link^® tachometer or new helm-mounted remote VTS switch

Controls

Gauges

Prop Selector

Midrange 30 hp

Our 747-cc 30-hp midrange boasts a streamlined design and solid performance. At just 214 pounds, it’s suitable for lightweight craft such as aluminum fishing boats and inflatables. Its Nitro Assist Tilt makes tilting almost effortless.

Available for mechanical or tiller-handle control
Only 214 pounds
Available in a 20” shaft
Powerful 17-amp alternator
Optional Variable Trolling RPM Switch (VTS^®) via our Multi-Function Tiller Handle, Command Link^® tachometer or new helm-mounted remote VTS switch

Controls

Gauges

Prop Selector

Specs & Compare

40 hp
30 hp

Engine Comparison

Engine Type	3 cyl
Displacement	747cc
Bore x Stroke	65 x 75mm (2.56 x 2.95 in.)
Prop Shaft Horsepower	40hp at 5500rpm
Full Throttle RPM Range	5000 ~ 6000 rpm
Alternator Output at W.O.T.	17 Amp
Compression Ratio	9.4:1
Fuel Induction System	EFI
Weight †	97 kg (214 lbs) - 101kg (223 lbs)
Recommended Fuel	Octane 87
Recommended Engine Oil	Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration	Yamaha 10-Micron Fuel/Water Separating Filter (external)
C.A.R.B. Rating	2-Star
Exhaust	Through Propeller
Intake	6
Ignition	CDI Microcomputer
Spark Plug	DPR6EB-9
Alternator Output	17 Amp
Starting System	Electric
Lubrication	Wet Sump
Engine Oil Capacity	1.7L/1.5L
Recommended Cooling	Thermostatic Control
Ethanol Blend Limit	10% Maximum
Gear Ratio	2.00:1
Gear Shift	Forward, Neutral, Reverse
Shaft Length	20"
Degree of Tilt	20°
Degree of Trim	-3° through +20°
Dry Weight	97 kg (214 lbs) - 101kg (223 lbs)
Mounting Centers	N/A
Steering Angle (maximum)	40° from center, either direction
Warranty	Limited 3-year Pleasure, 3-year Government, 1-Year Commercial

† Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).

Engine Comparison

Engine Type	3 cyl
Displacement	747cc
Bore x Stroke	65 x 75mm (2.56 x 2.95 in.)
Prop Shaft Horsepower	30hp at 5500rpm
Full Throttle RPM Range	5000 ~ 6000 rpm
Alternator Output at W.O.T.	17 Amp
Compression Ratio	9.4:1
Fuel Induction System	EFI
Weight †	97 kg (214 lbs) - 101kg (223 lbs)
Recommended Fuel	Octane 87
Recommended Engine Oil	Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration	Yamaha 10-Micron Fuel/Water Separating Filter (external)
C.A.R.B. Rating	2-Star
Exhaust	Through Propeller
Intake	6
Ignition	CDI Microcomputer
Spark Plug	DPR6EB-9
Alternator Output	17 Amp
Starting System	Electric
Lubrication	Wet Sump
Engine Oil Capacity	1.7L/1.5L
Recommended Cooling	Thermostatic Control
Ethanol Blend Limit	10% Maximum
Gear Ratio	2.00:1
Gear Shift	Forward, Neutral, Reverse
Shaft Length	20"
Degree of Tilt	65° - 66°
Degree of Trim	-3° through +20°
Dry Weight	97 kg (214 lbs) - 101kg (223 lbs)
Mounting Centers	N/A
Steering Angle (maximum)	40° from center, either direction
Warranty	Limited 3-year Pleasure, 3-year Government, 1-Year Commercial

View Bulletins for all Models

Perf. Bulletins

40 hp
30 hp

Manufacturer	PowerMatched	Boat Model	Engine	Configuration	Bulletin